Grant e



G. E. POLLOCK.

MILK CAN COVER LOCK.

urucmon men not. 21. I918.

Patented Oct. 7, 1919.

Mama

UNITED STATES! Phimm ohm {WT E. mmoea, owcmmrommmoes.

7 To all whom it mq'y'conoem: 7

. animal heat to he dischar ed from the' interior of the'can andto a ow fresh hit-to gain access thereto, the invention aiming primari l. to ,prowzide meansof an im erove and smp e nature for seourn'g the Cover I fimnly 111 osition upon theneek of the ban so that the same eanndtbe aceidenthfly removed ehuh will permit of the ame 'lieiggfi'e dily g pplied to or removed from thecan.

A stillfm ther objeet of the invention is to grovide simple and efieeti've means for securing the protector to the neck of the can, whichmeans is adjustable to fit mfier can rims of different sizes so as to cover and close the holes in the can neck cemmonly, em. loyed for wiring-on the ordinary P g .7 he .inyext fo eonsists Jffthe features of constirllcfiiflny w ina ifin' i i jfilig m 01f pafts' 'he'reinefte fully des'efibed enfl claimed, fieiergnoe hedjto the accompa 1 ram m w 1(5 I r leis side elevation of the upper por'tion of a milk can, showing the protector 'oover applied theretm f r 'Fig. 2 is an enlarged veftical section through the 0 f the-con end the We ,mqun flfl r fin Fi '3 hih fitjmr'filgenfxfiei v ofthe COVer removed from the;ee,1;'.,, I "Fi 4 is an ola 'ged Vertical section on T line" of Fig.- 3.

Fig.5 is an enlarged vertical section on line 55 of F ig. 4.

ReferriIfg tethe drawing, *1 'd'es'i ates a mifk or cream ban pr ohitied witht e ilsiial "neck 2 terminating iiffihe upwardly and 011t- I habitation ma Octoben-Ql, 7 1515 7 ls'fiautb zmfls.

jgg f proarided with "the hs 'l a mgaiig gr pose o,penu 1 gs%'for the passagg if '11 n g Wire's, 2w ere yenere 113mg? 1 v 113d maybe shouted toeios th groteetf'or emfbotiyinglny invention is;

erally beyond thesamefgh iaimetzi; 'y B0 opposite si'ies o :ff this cover f5 spnghg metellbracket "6 hevfj we; Ty bent miter enfis Z. Th'sfif; gym! 1,

low the swivels 10 ,ito Close "the i4 when ii flieyioteotot' is sgp'liegi 131 the 11. Hence provision is 'me; e ffirel e"'95 '5 3 hence efiects a saving of themil the upper edges thereof, the closure of said openings preventin the entrance of dust or dirt to the interior of the can while the protector is applied.

The body portion of the cover'5' is provided with a; centrally located aperture 12 and a guide flange 13 extending upwardly from and forming a continuation ofsaid aperture. Extending through the aperture and guide flange is a ventilator lagcomprising a tube or cylinder provided throughout its ;entire depth with perforations, adapted to permit of the discharge of the warm air containing the animal heat from the milk whilewot sufliciently small size to exclude rodents and all'ordinary lhe cylinder Hfhas a range ofia'djustment substantially coincident with its length or depth to expose any desired portion of its eifforated area to regulate or ,control the isciiarge of the animal heat as required or found desirable under difierent conditions of service, said cylinder being retained in adjusted osition by frictional engagement with the an'ge 13. v A

. The tubeo'r cylinder 1% is closed atits upp r ibya cass vaas 1 5, s bein' 51 greater diameter thansaid tube and t a" 350'. a t constitute n umb e l like shie d or canopy which willprev'ent, the r p ng akesaef water 11 0 e can throng i the perforated tub 1.4. Q! opening 12.

said isfof such 'diameteras to project periphei aliy Well beyond the flange 13 so ac resses an water dripping thereon at such a distance eyond the opening 12 as to obviate any liability of the water run- "ing towardsaid opening. Itflwill be im- 7 Prstmdthat theflan e 13 acts in this connection an." upstanding curb, which will project toe suflicicnt height to fprevent any water upon the cover 5 om splashing upward and, entering the opening- 12.

Hence while the. animal at fom the milk ,or cream will be permitted to' freely pass oiit'wardlyf through the tube or cylinder 14,

cold air to enter to ai degree dependent uPQn the adju tment of said tube or cylinder,

it be evident that at the same time the entrance of water, rodents and insects twill beefi'cctuall prevented, time keeping the contents'loft elcanin a thoroughly .sanita condition while being cooled and ventilate It is a well known fact that an enormous amount of milk and cream is wasted because it is frequently necessary to throw away the milkv or cream on account of the impurities entering the same while the animal heat is being extracted therefrom. My invention efi'ectually overcomes this ob'ection and k and cream 0,136,111, idly wasted for the leases stated.

In practi e the bracket pieces 6 are preferably made of spring metal so that their angularly bent ends 7, in addition to adjustably supporting the screws 8, will exert spring pressure upon the disks 9 to hold the same firmly in clampi position, thus obviating any liability of t fie same'being jarred out of place or of the screws becoming loosened from any cause.

It is to be understood that in the use of the invention the protector is applied to the can while the milk or cream is being stored for the extraction of the animal heat therefrom, and that the construction described ermits of the ready application of the device and its subsequent removal for the application of the lid or cover employed to seal the can for shi ping orother purposes. V

he protector is provid d with a suitable handle 16 applied to the cap '15 to permit adjustment of'the' ventilating tube and cap, and to permit the device as a whole to be conveniently manipulated and transported. Having t us fully described my invention, I claim 1. In a cover for milk or cream'cans, re

silient bracket members carried by the cover and having angular-1y bent ends depending from the edges thereof, adjusting screws threaded in said angularly bent members, and clamping disks swiveled upon the inner ends of said screws. 7

2. In a cover for milk or cream cans, bracket pieces having downturned' ends secured to the cover at diametrically opposite sides thereoflsc'rews adjustably mounted in the downturned ends of said bracket pieces, and disks eccentrically swiveled upon said screws, the said disks having straight clamping edges at one side thereof arranged closer to the eccentric pivot than the diametrically opposite edges of the disks.

3. In a cover for milk or cream cans, the combination of a can having a neck portion, a cover of eater diameter than said neck portion and formed to rest upon the rim edge thereof, downwardly projecting resilient members upon the semi cover at the outer edges thereof, screw members extending through said downwardly projecting members, and plates swiveled to the inner ends of said screw members and adapted to engage with the said neck portion of the 1 41-.

4. In combination, a can having open- .ings inits sides, a cover for said can, clamping'members carried by sald cover and movswiveled to said screw members and adapttoward or away from the axis of the cover, ed to engage the can sides and to close said disks swiveled on the inner ends of said 10 openings. member to cover said openings, and the said 6. In combination, a can having openings disks being cut away at one side so as to 5 in its sides, a cover for said can, resilient snugly engage with the underface of said L-shaped brackets at the edges of said cover member. and depending from the latter, screw mein- In testimony whereof I aflix my signature. 15 bers threaded \in said brackets and movable GRANT E. POLLOCK.

Copies of this patent my be obtained for five cents each, by addressing the Commissioner of Iatentn, Washington, D. G. 

